code: def is_mpi(predicate):
      return mpi_predicate(predicate)
  
file_path: mpi4py/test/mpiunittest.py
imports: from collections import namedtuple
  import contextlib
  import unittest
label_desc: Use image node_id 3 for calling a global function with example usage: is_mpi(predicate) and returns: mpi_predicate